rollup.config.js.backup

import alias from '@rollup/plugin-alias';
import svelte from 'rollup-plugin-svelte';
import commonjs from '@rollup/plugin-commonjs';
import resolve from '@rollup/plugin-node-resolve';
import livereload from 'rollup-plugin-livereload';
import { terser } from 'rollup-plugin-terser';
import sveltePreprocess from 'svelte-preprocess';
import typescript from '@rollup/plugin-typescript';
import ttypescript from 'ttypescript';
import css from 'rollup-plugin-css-only';
import json from '@rollup/plugin-json';

import path from 'path';

const production = !process.env.ROLLUP_WATCH;

function serve() {
	let server;

	function toExit() {
		if (server) server.kill(0);
	}

	return {
		writeBundle() {
			if (server) return;
			server = require('child_process').spawn('npm', ['run', 'start', '--', '--dev'], {
				stdio: ['ignore', 'inherit', 'inherit'],
				shell: true
			});

			process.on('SIGTERM', toExit);
			process.on('exit', toExit);
		}
	};
}


const k_resolver = resolve({
	browser: true,
	dedupe: ['svelte'],
	extensions: [
		'.ts',
		'.mjs',
		'.js',
		'.svelte',
	],
})

export default {
	input: 'src/main.ts',
	output: {
		sourcemap: true,
		format: 'iife',
		name: 'app',
		file: 'public/build/bundle.js'
	},
	plugins: [
		json(),
		svelte({
			preprocess: sveltePreprocess({
				sourceMap: !production,
			}),
			compilerOptions: {
				// enable run-time checks when not in production
				dev: !production
			},
		}),

		alias({
			resolve: ['.svelte', '.ts'],
			entries: {
				'#': path.resolve(__dirname, 'src'),
			},
			k_resolver,
		}),

		k_resolver,

		// we'll extract any component CSS out into
		// a separate file - better for performance
		css({
			output: 'bundle.css',
		}),

		commonjs(),
		typescript({
			typescript: ttypescript,
			sourceMap: !production,
			inlineSources: !production
		}),

		// In dev mode, call `npm run start` once
		// the bundle has been generated
		!production && serve(),

		// Watch the `public` directory and refresh the
		// browser on changes when not in production
		!production && livereload('public'),

		// If we're building for production (npm run build
		// instead of npm run dev), minify
		production && terser()
	],
	watch: {
		clearScreen: false
	}
};